1.1 本规范涵盖六种商业纯铬酸铅颜料，如下所示: I型 -报春花铬黄色， 类型II -柠檬铬黄色， 类型III -中等铬黄色， IV型 -浅铬橙， V型 -深铬橙，以及 VI型 -铬黄色代表绿色。 1.2 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.3 以下危险警告仅适用于本规范的试验方法部分。 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。

1.1 This specification covers six types of commercially pure lead chromate pigments as follows: Type I —Primrose Chrome Yellow, Type II —Lemon Chrome Yellow, Type III —Medium Chrome Yellow, Type IV —Light Chrome Orange, Type V —Dark Chrome Orange, and Type VI —Chrome Yellow for Green. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.3 The following hazard caveat applies to the test method portion of this specification only. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.